Any idea what something like this costs, or if it's something a technically educated person could do themselves without any formal training in locks? If I could pick up the lock for a few hundred and install it myself then it would be well worth it. I couldn't however see putting $1,000+ into a $2,000 safe.

I have that type of touchpad on my safe, and I like it... but you need to be very good at using the good and expensive Lithium battery, and put it on your calendar to replace it every year, whether it needs it or not.